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LGA775 retro OC project

A

AlwaysHope

Joined
Jun 16, 2013
Messages
1,457 (0.33/day)
Location
Australia
Hi,
Have Asus P5Q Pro with Q9400 & 2x2GB 800MHz ram, running 1:1. Soon will have 4x2GB...
Can get 400Mhz FSB stable for p95 testing OK, but any further FSB & system refuses to boot, falls back into reset mode.
Have FSBv @ 1.26
Vcore 1.275

Any other tips to get higher & stable FSB with this combo?

Thanks. :)
 
AlwaysHope,
Looks like you've got a cool project on your hands here. Can you post up a few CPUz screenshots of your rig?

I'm also interested to see your temps at idle and under load. AIDA64 offers some great tools for voltage and temp monitoring. I would highly suggest you download it if you haven't already.

Best of luck with your retro build.
 
Hmm what's the cpu OC at? I have P5G41-M LE+Q6600 with a 500MHZ OC

Capture.JPG
 
storm-chaser said:
AlwaysHope,
Looks like you've got a cool project on your hands here. Can you post up a few CPUz screenshots of your rig?

I'm also interested to see your temps at idle and under load. AIDA64 offers some great tools for voltage and temp monitoring. I would highly suggest you download it if you haven't already.

Best of luck with your retro build.
Click to expand...

Here you go, but I've come to learn that latest versions of CPUID HWMonitor & CPU-Z have some issues with reporting on this decade old board design. I reverted to earlier versions of these apps & seems to work well. At least early version of CPU-Z reports info about my Corsair XMS2 2x2GB 800Mhz SPD setup. The latest version of CPU_Z reports nothing in this tab.


8x400Mhz_1hr_blend.jpg



rk3066 said:
Hmm what's the cpu OC at? I have P5G41-M LE+Q6600 with a 500MHZ OC

View attachment 103336
Click to expand...
That's a great OC on G41 chipset setup with 1st gen quad core! .... lol... I'm jealous :laugh:
 
Last edited:
Vcore 1,35V, FSB Termination to 1,3V. NB Voltage to 1,35V.
Strap/Performance Level and DRAM settings tweaks are next, if above doesn't help.
When above 450MHz FSB, GTL/PLL tweaks may be needed.
 
agent_x007 said:
Vcore 1,35V, FSB Termination to 1,3V. NB Voltage to 1,35V.
Strap/Performance Level and DRAM settings tweaks are next, if above doesn't help.
When above 450MHz FSB, GTL/PLL tweaks may be needed.
Click to expand...

Thanks, got another P5Q mobo off ebay with some extras like E7600 & 2x2GB Hynix PC2-6400.
All working well after I refurbished it, this mobo has some wacky looking Heatsinks on NB, SB & just behind VRMs...

Overview1.JPG


I remounted the NB HS, cleaned out the old thermal paste & replaced with 'thermal grizzly' stuff. Getting it ready for some extra volts in sustained OC!

board came with 0703 bios but not listed on Asus support site for this mobo, anyway... not to worry, flashed to 2209, memtesting those Hynix sticks as I type this.
It's peace of mind in case my P5Q Pro dies... got too much DDR2 ram sitting around doing bugger all, will eventually put it to use in dedicated Linux box one day with this rig...
 
I have almost the same cpu a q9450 on a asus p5e flashed to rampage formula. I've had the setup for 10 years! It won't do above 400-433 or so but it used to do 475fsb. I got 3.8 from a 2.66 cpu. I was using high motherboard voltage at 475. Like 1.73 NB voltage. It spent most of it's life at 3.6 and 450 fsb 1.61 NB voltage.
I'm limited to 400-433 now because I overvolted like crazy my cpu and it degraded very fast@ 1.55+-1.6vcore

I kept my vtt termination volts at like .02 below vcore.

Note the NB voltages I mentioned some might. consider too high but nb and vtt volts definitely help high fsb overclock along with performance level and strap.

You mentioned thermal grizzly did you use liquid metal or normal paste? I redone my boards heatsinks also.
 
You should have tweaked GTL settings and/or Performance Level instead, and not going brute force method with 1,7V on NB and 1,5V+ on VTT.
Just FYI : Anything over 1,45V on FSB Termination might "kill" 45nm quad core CPU (depending on rest of the settings).
I had Maximus Formula back in the day (BIOS moded to Rampage ;)), with Q6600 G0 CPU and I was able to do 4GHz on it (445MHz FSB).
I never had any 45nm Quad Cores on it though...
 
Last edited:
Yeah I think the pl was at 13 at 475 and 8 or maybe 9 at 450 for mine. The vtt on my board would sensor readout .1 lower than set in bios, the max I set it was 1.54 which should have been 1.44, although most of the time it was at 1.36-1.38 bios setting. The cpu's gtl
s were at the most stable I could get them x65cpu x63nb.

I like how the rampage formula bios has pull-ins of the performace levels. It also had another setting at the bottom of the bios menu for cpu and nb clock scews
These sometimes adjusting them can bring stability.

Q6600 1.6ghz overclock that is amazing!
 
Here's Q6700 with Q6600 multiplier, at 4GHz :)
6VHACvW.png

Active cooling VRM (since this was only used for benchmarks).
 
Good Guru said:
I have almost the same cpu a q9450 on a asus p5e flashed to rampage formula. I've had the setup for 10 years! It won't do above 400-433 or so but it used to do 475fsb. I got 3.8 from a 2.66 cpu. I was using high motherboard voltage at 475. Like 1.73 NB voltage. It spent most of it's life at 3.6 and 450 fsb 1.61 NB voltage.
I'm limited to 400-433 now because I overvolted like crazy my cpu and it degraded very fast@ 1.55+-1.6vcore

I kept my vtt termination volts at like .02 below vcore.

Note the NB voltages I mentioned some might. consider too high but nb and vtt volts definitely help high fsb overclock along with performance level and strap.

You mentioned thermal grizzly did you use liquid metal or normal paste? I redone my boards heatsinks also.
Click to expand...

Great tips, thanks for the help! FYI used normal paste thermal grizzly.

Q9650 or extreme editions would be ideal for performance but imo, on ebay atm, they are asking too much for 10+ yr old cpus.

In any case, I don't want to throw too much $ at this platform, just use what I have stored over the yrs already & some cheap bargains on ebay if I come across them.
Biggest issue imo for future usage is limited instruction sets in these older cpus. Not so much their outright performance, but its ability to crunch through modern & future apps is limited.
Still if your a tinker at heart, its all fun!

I have Xeon X3360 on its way, so will post new results soon.

Testing some Hynix HYMP125U64CP8-S6 2x2GB PC2-6400 kit on P5Q vanilla board (non pro), will pair these up with X3360 when I get it.
This ram was snapped up for bargain price imo, Memtestx86 stable to 466Mhz (2 passes) with 1.86 vdimm. Tightened timings from stock 6-6-6-18 to 5-5-5-15.
Ran PCMark08 & p95 1hr under win 7 x64.... all's well!
Greatest OC friendly DDR2 I ever seen. :)
 
Corsair CM2X2048-6400C5 @ approx 1000MHz, 1.9vdimm, 2 passes Memtest86 v4.1 (old version but good enough for decade old hardware)

All I gotta say at this point, those Corsair sticks OC very well indeed, at least in pre windows environment so far. Aiming for 1066Mhz stable.

Some pics...

1.jpg
2.jpg


Aiming to get new test setup for this & future projects, I'm very thankful that this old gear still working well!
 
I got Gskill ddr2 500 5-5-5 in mine they won't even work at 510 but in my main pc I got Gskill ddr3 1600 9-9-9 and it overclocks to 2347 11-11-12 crazy eh? 47%
 
Going over 1000MHz for DDR2 can be tricky if you got 4 DIMM configuration.
@AlwaysHope I would try 1100MHz at 2,0 or 2,1V.
@Good Guru I got eight A-Data 2000MHz CL9 2GB DIMMs (16GB total), that do 1600MHz CL7.8.7.21 CR1T tRFC=54 at 1,62V ;)
 
Last edited:
Good Guru said:
I got Gskill ddr2 500 5-5-5 in mine they won't even work at 510 but in my main pc I got Gskill ddr3 1600 9-9-9 and it overclocks to 2347 11-11-12 crazy eh? 47%
Click to expand...

Probably depends on motherboard to a certain extent & bios versions. Was that DDR3 OC memtest86 ok?

agent_x007 said:
Going over 1000MHz for DDR2 can be tricky if you got 4 DIMM configuration.
@AlwaysHope I would try 1100MHz at 2,0 or 2,1V.
;)
Click to expand...

I know, can see that wall coming up, testing atm with 4x2GB Corsair XMS2 800Mhz sticks, so far memest86 1 pass @ 450Mhz, This is on the P5Q vanilla board. Not going to chuck them into the P5Q Pro untill my Xeon arrives.
Already inside "yellow" zone of NB volts bios setting.. lucky I got cool ambients in testing room though.. :cool:
 
Ok this is it so it seems without system having to go through the old "cold boot" sequence everytime it needs to restart. IIRC, in the old threads with Asus P5Q boards, other users also had this issue with decent OC's on this type of architecture, at least with Asus boards.

I tend to think some of the obscure bios settings for Overclocking are marketing stuff, cause experimenting with some of them does nothing.

Using vanilla P5Q board purely for NB & ram testing purposes, the bioses for this & Pro version are 99% identical. P5Q vanilla only has one PCIe x16 slot. Not going to fiddle with the Pro version board until my Xeon arrives. Better to test OC with full 12Mb cache cpu then.

In windows, did 3 hrs p95 blend test, no errors on 8GB (4x2GB) Corsair CM2X2048-6400C5 sticks, only issue is 1 set - v4.3, the other v5.2. So not exactly identical sticks, but basically you could say yes.

3a.jpg
 
Disable Mem. OC Charger, DRAM Training options along with Express Gate stuff (if you have them on "Auto").
If you didn't increased NB Voltage, I highly recommend you do that as well.
 
agent_x007 said:
Disable Mem. OC Charger, DRAM Training options along with Express Gate stuff (if you have them on "Auto").
If you didn't increased NB Voltage, I highly recommend you do that as well.
Click to expand...

Got all that express gate rubbish disabled anyway on all OC ventures with this rig. Don't have active cooling on NB but cool ambients atm help a lot. Pushed NBv to end of "yellow zone" don't really want to go into "pink" zone...lol... but yeah will try with Mem OC charger disabled.

Cheers, man thanks.
 
Gonna watch this thread now. Makes me wanna dig out my lga775 P5BE-PLUS motherboard again. How cheap are lga775 quads? Would love to build back LGA 775 for retro builds. Now where should I start

If my memory serve me right I think I got 450FSB on my P5BE-PLUS with my core duo E6320 could not go much higher without crashing. The northbridge heatsink is boiling hot to touch already.
 
MIRTAZAPINE said:
Gonna watch this thread now. Makes me wanna dig out my lga775 P5BE-PLUS motherboard again. How cheap are lga775 quads? Would love to build back LGA 775 for retro builds. Now where should I start

If my memory serve me right I think I got 450FSB on my P5BE-PLUS with my core duo E6320 could not go much higher without crashing. The northbridge heatsink is boiling hot to touch already.
Click to expand...


Thanks, ebay is probably your best bet with retro stuff. I wont be updating this thread until my Xeon arrives... still waiting.
 
I've decided to start buying up lots of 775 chips to play around with in my Maximus II Formula.

I will need to find some good memory kits though, ATM the fastest I have is a single 2GB 800 stick.

Last I got was https://valid.x86.fr/dz1jm1 474 FSB for 4.5 GHz@1.6v or so with the measly 9.5 multiplier on my E7200... I think I will stick mostly to the P4s and save the NB from obscene clocks and voltages for now. I would really like to put it under LN2 but at the same time I really don't want to break the board putting 200A into some 5 quid chip...

A lot of the C2s make good practice objects for delids btw ;)
 
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